苏丹某低品位金矿石柱浸-活性炭吸附试验研究

苏丹某金矿为低品位贫硫石英脉型金矿，金主要赋存于脉石矿物粒间，以中、粗粒级嵌布为主。为给该矿石的开发利用提供依据，对其进行了柱浸-活性炭吸附试验研究。结果表明：在给矿粒度为-20 mm、浸液pH=10.5～11、氰化钠浓度为0.10%、喷淋强度为20 L/(m2·h)、喷淋时间为16 d时，金的浸出率可以达到73.51%。对活性炭A和活性炭B进行磨损试验和饱和吸附容量对比试验，结果显示活性炭A综合吸附性能更好。在活性炭A投加量为8 g/L、吸附时间为20 h时对浸液进行金吸附试验，金的吸附率可以达到99.67%。试验结果可以为该金矿资源的开发利用提供技术依据。

Study on Column Leaching-Activated Carbon Adsorption of a Low-grade Gold Ore from Sultan

A low grade gold ore from Sultan with poor sulfide was quartz-vein gold deposit. Native gold mainly embedded in quartz minerals as middle and coarse particle size. Column Leaching-activated carbon adsorption experiments were conducted to provide technique basis for the development of the ore. Results indicated that at the feed size of-20 mm,pH value of 10. 5~11,concentration of sodium cyanide of 0. 10%,spray intensity of 20 L/(m2·h),leaching time of 16 d,gold leaching rate can reach 73. 51%. Comparison tests on abrasion and saturated sorption capacity were conducted on activated carbon A and activa-ted carbon B,activated carbon A has relatively better adsorption properties. With activated carbon A dosage of 8 g/L,adsorp-tion time of 20 h,gold leaching test was conducted on the leaching solution,the gold adsorption rate can reach 99. 67%. The results can provide technique basis for the development and utilization of the gold resources.